2-128
Confidential
■
Faulty registration
- First side (Document scanner unit)
- Second side (ADF unit)
■
Dark
Step
Cause
Remedy
1
Fine adjustment of scan start
position misalignment
Perform the fine adjustment of scan start
position. (
2
First side document scanning
position actuator caught on
some position
Re-assemble the first side document
scanning position actuator.
3
First side CIS unit failure
Replace the first side CIS unit.
4
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Fine adjustment of scan start
position misalignment
Perform the fine adjustment of scan start
position. (
2
Second side document
scanning position actuator
caught on some position
Re-assemble the second side document
scanning position actuator.
3
Second side CIS unit failure
Replace the second side CIS unit.
4
Main PCB failure
Replace the main PCB ASSY.
< User Check >
- Check whether the setting of the contrast does not become dark.
- Clean the second side document hold.
Step
Cause
Remedy
1
White level calibration data
failure
Perform the acquisition of white level data.
(
2
Dirt on the second side
document hold
Clean the second side document hold. Or
replace the ADF unit.
3
Dirt on the black reference
tape of the document scanner
unit
Clean the glass of the black reference tape
part. Or replace the document scanner unit.
4
First side or second side CIS
unit failure
Replace the first side or second side CIS
unit.
5
Main PCB failure
Replace the main PCB ASSY.
Содержание DCP-L8400CDN
Страница 38: ...2 8 Confidential 2 2 2 Scanning part Fig 2 4 Right side Left side Face up Document scanning feed path ...
Страница 249: ...3 85 Confidential 3 Remove the ADF spring from the Upper ADF chute Fig 3 95 ADF spring Upper ADF chute ...
Страница 277: ...3 113 Confidential 9 35 LCD 1 Remove the LCD from the Control panel ASSY Fig 3 145 Control panel ASSY LCD ...
Страница 391: ...5 7 Confidential Common to first and second side Fig 5 1 ...